ACI Aggregate Base Technician questions answers
What must be done to the sample if method B or C is Moisten the sample
used? (C702)
What do you do if the sample is wet and Method A is to Dry the sample
be used? (C702)
Method C, miniature stockpiling, cannot be used for Coarse aggregate, or mixtures of coarse and fine aggregate
which type of aggregate? (C702)
Which method involves the use of chutes, holding Method A
receptacles, and hoppers or straight-edged pans?
(C702)
Sample splitters must have how many equal width 8
chutes for coarse aggregate? (C702)
Sample splitters must have how many equal width 12
chutes for fine aggregate? (C702)
In Methods B and C the sample is shoveled into a ____ conical pile
before it is flattened and divided. (c702)
When using Method B, what is an alternate surface that Canvas blanket or tear resistant tarp
can be used when reducing the sample? (C702)
When quartering a sample, retain two _________ quarters diagonally opposite
and reject the other two. (c702)
In miniature stockpile sampling, obtain the sample by 5, random
selecting at least ____ increments of material from ____
locations in the stockpile. (C702)
The drying apparatus used for dry preparation of a 60C/140F
sample is any suitable device capable of drying
samples at a temperature not exceeding _____. (D421)
, ACI Aggregate Base Technician questions answers
A suitable sample splitter is one capable of obtaining representative, fines
____ portions of the sample without appreciable loss of
____. (D421)
For particle size analysis, material passing a 2.00mm 110, 60
(No. 10) sieve is required in amounts equal to
approximately ___ g for sandy soils and approximately
___g for silty or clayey soils. (D421)
For specific gravity, material passing a 2.00mm (10) sieve 25, 10
is requires in amounts of at least ____g when the
volumetric flask is used and at least ____g when the
stoppered bottle is used. (D421)
For the physical test, the remaining portion of the 2.00mm (No. 10), Two
material passing the _____ sieve shall be separated into
____ parts by means of a 0.425mm (40) sieve. (d421)
For the physical test, if the sample contains brittle Pulverizing operation
particles such as flakes of mica, fragments of seashells,
etc, the ____________ shall be done carefully to free the
finer material that adheres to the coarse particles.
(D421)
What is defined as the water content at which the soil The liquid limit of a soil
passes from a plastic to a liquid? (D4318)
(LL) suitable containers should be made of material corrosion, mass, disintegration
resistant to ____ and not subject to change in ____ or ___ on
repeated heating and cooling. (D4318)
(LL) A sample with a mass of about ___ shall be taken 100g
from the thoroughly mixed portion of the material.
(D4318)
Wear on the liquid limit device is considered excessive 13, one half
when the point of contact on the cup or base exceeds
approximately ____mm in diameter, or when any point on
the rim of the cup is worn to approximately ____ the
original thickness.(D4318)
(LL) Adjust the height of drop of the cup so that the 10 +/-0.2mm
point on the cup that comes in contact with the base
rises to a height of____. (D4318)
What must be done to the sample if method B or C is Moisten the sample
used? (C702)
What do you do if the sample is wet and Method A is to Dry the sample
be used? (C702)
Method C, miniature stockpiling, cannot be used for Coarse aggregate, or mixtures of coarse and fine aggregate
which type of aggregate? (C702)
Which method involves the use of chutes, holding Method A
receptacles, and hoppers or straight-edged pans?
(C702)
Sample splitters must have how many equal width 8
chutes for coarse aggregate? (C702)
Sample splitters must have how many equal width 12
chutes for fine aggregate? (C702)
In Methods B and C the sample is shoveled into a ____ conical pile
before it is flattened and divided. (c702)
When using Method B, what is an alternate surface that Canvas blanket or tear resistant tarp
can be used when reducing the sample? (C702)
When quartering a sample, retain two _________ quarters diagonally opposite
and reject the other two. (c702)
In miniature stockpile sampling, obtain the sample by 5, random
selecting at least ____ increments of material from ____
locations in the stockpile. (C702)
The drying apparatus used for dry preparation of a 60C/140F
sample is any suitable device capable of drying
samples at a temperature not exceeding _____. (D421)
, ACI Aggregate Base Technician questions answers
A suitable sample splitter is one capable of obtaining representative, fines
____ portions of the sample without appreciable loss of
____. (D421)
For particle size analysis, material passing a 2.00mm 110, 60
(No. 10) sieve is required in amounts equal to
approximately ___ g for sandy soils and approximately
___g for silty or clayey soils. (D421)
For specific gravity, material passing a 2.00mm (10) sieve 25, 10
is requires in amounts of at least ____g when the
volumetric flask is used and at least ____g when the
stoppered bottle is used. (D421)
For the physical test, the remaining portion of the 2.00mm (No. 10), Two
material passing the _____ sieve shall be separated into
____ parts by means of a 0.425mm (40) sieve. (d421)
For the physical test, if the sample contains brittle Pulverizing operation
particles such as flakes of mica, fragments of seashells,
etc, the ____________ shall be done carefully to free the
finer material that adheres to the coarse particles.
(D421)
What is defined as the water content at which the soil The liquid limit of a soil
passes from a plastic to a liquid? (D4318)
(LL) suitable containers should be made of material corrosion, mass, disintegration
resistant to ____ and not subject to change in ____ or ___ on
repeated heating and cooling. (D4318)
(LL) A sample with a mass of about ___ shall be taken 100g
from the thoroughly mixed portion of the material.
(D4318)
Wear on the liquid limit device is considered excessive 13, one half
when the point of contact on the cup or base exceeds
approximately ____mm in diameter, or when any point on
the rim of the cup is worn to approximately ____ the
original thickness.(D4318)
(LL) Adjust the height of drop of the cup so that the 10 +/-0.2mm
point on the cup that comes in contact with the base
rises to a height of____. (D4318)
